The first asymmetric synthesis of dienomycin C was accomplished in seven steps and 46% overall yield. (C) 1998 Elsevier Science Ltd. All rights reserved.
The first asymmetric synthesis of dienomycin C was accomplished in seven steps and 46% overall yield. (C) 1998 Elsevier Science Ltd. All rights reserved.
Diastereoselective elaboration of 2,3,4-substituted piperidines using diene iron tricarbonyl complexes. Total synthesis of (±)-dienomycin C and (±)-4-epi-dienomycin C
The diastereoselective formation of 2,3,4-substituted piperidines is achieved by condensation of the iron dienal complex2 and the primaryamine 3via an intramolecular Mannich-type cyclisation. This method is illustrated by the first total synthesis of (±)-dienomycin C 1 and its C-4 epimer 9.